83397731 has 8 divisors (see below), whose sum is σ = 85567104. Its totient is φ = 81234880.

The previous prime is 83397703. The next prime is 83397737. The reversal of 83397731 is 13779338.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83397731 - 2¹⁰ = 83396707 is a prime.

It is a super-2 number, since 2×83397731² = 13910363071896722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83397737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34205 + ... + 36561.

It is an arithmetic number, because the mean of its divisors is an integer number (10695888).

Almost surely, 2^83397731 is an apocalyptic number.

83397731 is a deficient number, since it is larger than the sum of its proper divisors (2169373).

83397731 is a wasteful number, since it uses less digits than its factorization.

83397731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261.

The product of its digits is 95256, while the sum is 41.

The square root of 83397731 is about 9132.2358160529. The cubic root of 83397731 is about 436.9027164854.

The spelling of 83397731 in words is "eighty-three million, three hundred ninety-seven thousand, seven hundred thirty-one".